Today's high and low tide times for Chatham, MA, plus a 7-day tide table. Astronomical predictions from the nearest harmonic station — free and updated daily.
In Chatham, MA, the next high tide is at 1:03 AM (1.94 m) and the next low tide is at 7:24 AM (0.17 m), based on harmonic predictions for Chatham Harbor, Aunt Lydias Cove.
All high and low tides for Chatham today, in local time (America/New York). Heights are metres above chart datum.
High (H) and low (L) tide times and heights for the next seven days at Chatham.
| Date | Tides (local time · height) |
|---|---|
| Wed, Jul 15 | H 1:03 AM 1.94 mL 7:24 AM 0.17 mH 1:21 PM 2.21 mL 8:00 PM 0.01 m |
| Thu, Jul 16 | H 1:54 AM 1.97 mL 8:15 AM 0.15 mH 2:12 PM 2.18 mL 8:51 PM 0.03 m |
| Fri, Jul 17 | H 2:42 AM 1.99 mL 9:06 AM 0.15 mH 3:03 PM 2.13 mL 9:39 PM 0.09 m |
| Sat, Jul 18 | H 3:30 AM 1.99 mL 10:00 AM 0.17 mH 3:51 PM 2.04 mL 10:27 PM 0.16 m |
| Sun, Jul 19 | H 4:21 AM 1.96 mL 10:51 AM 0.21 mH 4:45 PM 1.94 mL 11:18 PM 0.25 m |
| Mon, Jul 20 | H 5:09 AM 1.93 mL 11:48 AM 0.26 mH 5:36 PM 1.83 m |
| Tue, Jul 21 | L 12:06 AM 0.35 mH 6:00 AM 1.89 mL 12:42 PM 0.30 mH 6:30 PM 1.72 m |
Predicted from Chatham Harbor, Aunt Lydias Cove, 1 km away (reliability: high — a close match — expect predictions within a few minutes of the published station table).
These are astronomical tide predictions — the rise and fall driven by the moon and sun, computed by harmonic analysis. They do not include weather effects: a strong onshore wind, low barometric pressure or a storm surge can push the real water level above the predicted high, and offshore winds or high pressure can hold it below the predicted low. For navigation or any safety-critical decision, always check the official tide tables and a live water-level gauge for Chatham.
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